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X9523 Datasheet(PDF) 2 Page - Intersil Corporation

No. de Pieza. X9523
Descripción  Laser Diode Control for Fiber Optic Modules
Descarga  28 Pages
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Fabricante  INTERSIL [Intersil Corporation]
Página de inicio  http://www.intersil.com/cda/home
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X9523 Datasheet(HTML) 2 Page - Intersil Corporation

 
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2
FN8209.1
January 3, 2006
PIN CONFIGURATION
DETAILED DEVICE DESCRIPTION
The X9523 combines two Intersil Digitally Controlled
Potentiometer (DCP) devices, V1/Vcc power-on reset
control, V1/Vcc low voltage reset control, and two sup-
plementary voltage monitors in one package. These
functions are suited to the control, support, and monitor-
ing of various system parameters in fiber optic modules.
The combination of the X9523 functionality lowers sys-
tem cost, increases reliability, and reduces board space
requirements.
Two high resolution DCPs allow for the “set-and-forget”
adjustment of Laser Driver IC parameters such as Laser
Diode Bias and Modulation Currents.
Applying voltage to VCC activates the Power-on Reset
circuit which allows the V1RO output to go HIGH, until
the supply the supply voltage stabilizes for a period of
time (selectable via software). The V1RO output then
goes LOW. The Low Voltage Reset circuitry allows the
V1RO output to go HIGH when VCC falls below the mini-
mum VCC trip point. V1RO remains HIGH until VCC
returns to proper operating level. A Manual Reset (MR)
input allows the user to externally trigger the V1RO out-
put (HIGH).
Two supplementary Voltage Monitor circuits continuously
compare their inputs to individual trip voltages. If an input
voltage exceeds it’s associated trip level, a hardware out-
put (V3RO, V2RO) are allowed to go HIGH. If the input
voltage becomes lower than it’s associated trip level, the
corresponding output is driven LOW. A corresponding
binary representation of the two monitor circuit outputs
(V2RO and V3RO) are also stored in latched, volatile
(CONSTAT) register bits. The status of these two moni-
tor outputs can be read out via the 2-wire serial port.
Intersil’s unique circuits allow for all internal trip volt-
ages to be individually programmed with high accu-
racy. This gives the designer great flexibility in
changing system parameters, either at the time of
manufacture, or in the field.
The device features a 2-Wire interface and software
protocol allowing operation on an I2C™ compatible
serial bus.
Ordering Information
PART
NUMBER
PART
MARKING
TEMP RANGE
(°C)
PACKAGE
X9523V20I-A
X9523VIA
-40 to +85
20 Ld TSSOP
X9523V20I-B
X9523VIB
-40 to +85
20 Ld TSSOP
X9523V20IZ-A
(Note)
X9523VZIA
-40 to +85
20 Ld TSSOP
(Pb-free)
X9523V20IZ-B
(Note)
X9523VZIB
-40 to +85
20 Ld TSSOP
(Pb-free)
*Add "T1" suffix for tape and reel.
NOTE: Intersil Pb-free plus anneal products employ special Pb-free
material sets; molding compounds/die attach materials and 100%
matte tin plate termination finish, which are RoHS compliant and
compatible with both SnPb and Pb-free soldering operations. Intersil
Pb-free products are MSL classified at Pb-free peak reflow
temperatures that meet or exceed the Pb-free requirements of
IPC/JEDEC J STD-020.
V2
RL2
NC
3
4
V1 / Vcc
SCL
NC
NC
RW1
RH1
7
8
V3
VSS
10
RL1
RH2
1
18
19
17
20
14
15
13
16
12
11
MR
6
RW2
2
SDA
9
V3RO
5
WP
V1RO
V2RO
NOT TO SCALE
20 Pin TSSOP
X9523


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